2006-02-13 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
Olivier Hainque <hainque@adacore.com>
Eric Botcazou <ebotcazou@adacore.com>
* ada-tree.h: (TYPE_UNCHECKED_UNION_P): Deleted.
* gigi.h (value_factor_p): Add prototype and description, now public.
* decl.c (gnat_to_gnu_field): Don't attempt BLKmode to integral type
promotion for field with rep clause if the associated size was proven
to be in error.
Expand comments describing attempts to use a packable type.
(gnat_to_gnu_entity) <E_Signed_Integer_Subtype,
E_Floating_Point_Subtype>: Inherit alias set of what we are making a
subtype of to ensure conflicts amongst all subtypes in a hierarchy,
necessary since these are not different types and pointers may
actually designate any subtype in this hierarchy.
(gnat_to_gnu_entity, case E_Record_Type): Always make fields for
discriminants but put them into record only if not Unchecked_Union;
pass flag to components_to_record showing Unchecked_Union.
(make_dummy_type): Use UNION_TYPE only if Unchecked_Union and no
components before variants; don't set TYPE_UNCHECKED_UNION_P.
(components_to_record): New argument UNCHECKED_UNION.
Remove special case code for Unchecked_Union and instead use main code
with small changes.
PR ada/26096
(gnat_to_gnu_entity) <E_Variable>: Do not initialize the
aligning variable with the expression being built, only its inner
field.
* trans.c (Handled_Sequence_Of_Statements_to_gnu): Remove call to
emit_sequence_entry_statements.
(emit_sequence_entry_statements, body_with_handlers_p): Delete.
(establish_gnat_vms_condition_handler): Move before
Subprogram_Body_to_gnu.
(Subprogram_Body_to_gnu): On VMS, establish_gnat_vms_condition_handler
for a subprogram if it has a foreign convention or is exported.
(Identifier_to_gnu): Manually unshare the DECL_INITIAL tree when it is
substituted for a CONST_DECL.
(tree_transform, case N_Aggregate): Remove code for UNION_TYPE and pass
Etype to assoc_to_constructor.
(assoc_to_constructor): New argument, GNAT_ENTITY; use it to ignore
discriminants of Unchecked_Union.
(TARGET_ABI_OPEN_VMS): Define to 0 if not defined, so that later uses
don't need cluttering preprocessor directives.
(establish_gnat_vms_condition_handler): New function. Establish the GNAT
condition handler as current in the compiled function.
(body_with_handlers_p): New function. Tell whether a given sequence of
statements node is attached to a package or subprogram body and involves
exception handlers possibly nested within inner block statements.
(emit_sequence_entry_statements): New function, to emit special
statements on entry of sequences when necessary. Establish GNAT
condition handler in the proper cases for VMS.
(Handled_Sequence_Of_Statements_to_gnu): Start block code with
emit_sequence_entry_statements.
* utils2.c (find_common_type): If both input types are BLKmode and
have a constant size, use the smaller one.
(build_simple_component_ref): Also match if FIELD and NEW_FIELD are
the same.
* utils.c (value_factor_p): Make public, to allow uses from other gigi
units.
(create_type_decl): Do not set the flag DECL_IGNORED_P for dummy types.
(convert, case UNION_TYPE): Remove special treatment for unchecked
unions.
PR ada/18659
(update_pointer_to): Update variants of pointer types to
unconstrained arrays by attaching the list of fields of the main
variant.
From-SVN: r111030
